An action potential begins when the excitatory inputs are sufficiently strong with respect to inhibitory inputs to depolarize the cell from ______________ millivolts.

Question

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An action potential begins when the excitatory inputs depolarize the cell from approximately -70 to -55 millivolts, overcoming the resting membrane potential and reaching the threshold for action potential initiation.

An Action Potential Begins When the Excitatory Inputs Are Sufficiently